Were you looking for information about Giardia? Giarda is a common misspelling of Giardia.
Giardia is the most common nonbacterial cause of diarrhea in the United States. It is a one-celled microscopic parasite that is found in soil, food, water, or surfaces that have been contaminated with the feces from infected humans or animals. Transmission can occur by accidentally swallowing the parasite. Anyone can get a Giardia infection, but international travelers, childcare workers, and children who attend daycare centers are more likely to become infected.
(Click Giardia to learn more about Giardia, including how it is transmitted, what other symptoms may occur, and how it is diagnosed. You can also click on the various links in the box to the right to access specific topics on Giardia.)